Perhaps you should try some spelling variations:
20th century » 18th century
2.1 germany » 2017 germany, 9.13 germany, 9.14 germany
2f germany » 2 germany, 20 germany, 25 germany
21 germany » 11 germany, 2 germany, 20 germany
2020 20th » 2020 16th, 2020 5th, 2020 2021

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture AND state %((2f germany) OR (((21 germany) OR (2.1 germany)))) %((imf history) OR (brief history)) %2020 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture AND state %((2f germany) OR (((21 germany) OR (2.1 germany)))) %((imf history) OR (brief history)) %2020 20th century%22*.